Mathematics
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高2数学
答案4行目で、なぜ右辺が3^2になるのか教えてください🙏🏻
6 [改訂版3TRIAL 数学Ⅱ 問題342]
次の方程式を解け。
(1) log: (2x+1)+log3(x-3) = 2
70 X 70
(093 (2x+1)+ (093 (2-3)
=1093(2x+1)(x-3)=2
(2x+1)(x-3)=32=9
(2)
2x² - 6x+x-3=9
2ペー5x-12:0=(2x+3)(x-4)=0
2
31
24 8
x==2²/2 ₁4 X 20 FY
10g (2x + 3) + Ing. (Ax+1)=2100.5
x=4
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